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我遵循CS50课程，遇到application.py问题。我正在云中的9代码编辑器下面的警告（ACE）：云9上的pylint错误消息9 CS50
instance of SQLAlchemy has no column member
instance of SQLAlchemy has no integer member
instance of SQLAlchemy has no text member
instance of scoped_session has no add member
instance of scoped_session has no commit member
Class Registrants has no query member
我创建的主目录的文件.pylintrc并添加以下两行：
ignored-modules=flask_sqlalchemy
ignored-classes=SQLObject,Registrant
这摆脱了大多数的错误，但我留下了：
instance of scoped_session has no add member
instance of scoped_session has no commit member
下面是导致该问题的代码：
from flask import Flask, render_template, redirect, request, url_for
from flask_sqlalchemy import SQLAlchemy
app = Flask(__name__)
# Flask-SQLAlchemy
app.config["SQLALCHEMY_TRACK_MODIFICATIONS"] = False
app.config["SQLALCHEMY_DATABASE_URI"] = "sqlite:///froshims3.db"
app.config["SQLALCHEMY_ECHO"] = True
db = SQLAlchemy(app)
class Registrant(db.Model):
__tablename__ = "registrants"
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.Text)
dorm = db.Column(db.Text)
def __init__(self, name, dorm):
self.name = name
self.dorm = dorm
@app.route("/")
def index():
return render_template("index.html")
@app.route("/register", methods=["POST"])
def register():
if request.form["name"] == "" or request.form["dorm"] == "":
return render_template("failure.html")
registrant = Registrant(request.form["name"], request.form["dorm"])
db.session.add(registrant)
db.session.commit()
return render_template("success.html")
@app.route("/registrants")
def registrants():
rows = Registrant.query.all()
return render_template("registrants.html", registrants=rows)
@app.route("/unregister", methods=["GET", "POST"])
def unregister():
if request.method == "GET":
rows = Registrant.query.all()
return render_template("unregister.html", registrants=rows)
elif request.method == "POST":
if request.form["id"]:
Registrant.query.filter(Registrant.id == request.form["id"]).delete()
db.session.commit()
return redirect(url_for("registrants"))